HappenLee commented on code in PR #22327:
URL: https://github.com/apache/doris/pull/22327#discussion_r1278604394
##########
be/src/vec/common/aggregation_common.h:
##########
@@ -218,6 +196,112 @@ T pack_fixed(size_t i, size_t keys_size, const
ColumnRawPtrs& key_columns, const
return key;
}
+template <typename T>
+std::vector<T> pack_fixeds(size_t row_numbers, const ColumnRawPtrs&
key_columns,
+ const Sizes& key_sizes, const ColumnRawPtrs&
nullmap_columns) {
+ size_t bitmap_size = 0;
+ if (!nullmap_columns.empty()) {
+ bitmap_size = std::tuple_size<KeysNullMap<T>>::value;
+ }
+
+ std::vector<T> result(row_numbers);
+ size_t offset = 0;
+ if (bitmap_size > 0) {
+ for (size_t j = 0; j < nullmap_columns.size(); j++) {
+ if (!nullmap_columns[j]) {
+ continue;
+ }
+ size_t bucket = j / 8;
+ size_t offset = j % 8;
+ const auto& data =
+ assert_cast<const
ColumnUInt8&>(*nullmap_columns[j]).get_data().data();
+ for (size_t i = 0; i < row_numbers; ++i) {
+ *((char*)(&result[i]) + bucket) |= data[i] << offset;
+ }
+ }
+ offset += bitmap_size;
+ }
+
+ // make sure null cell is filled by 0x0
+ T zero {};
+ for (size_t j = 0; j < key_columns.size(); ++j) {
+ const char* data = key_columns[j]->get_raw_data().data;
+
+ if (key_sizes[j] == 1) {
+ if (nullmap_columns.size() && nullmap_columns[j]) {
+ const auto& nullmap =
+ assert_cast<const
ColumnUInt8&>(*nullmap_columns[j]).get_data().data();
+ for (size_t i = 0; i < row_numbers; ++i) {
+ memcpy_fixed_1((char*)(&result[i]) + offset,
Review Comment:
why not use template to replace the 1,2,4,8,16？and do the point cast in the
function
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